Line integrals of NE and (nE)-squared at high Galactic latitude

Details Line integrals of NE and (nE)-squared at high Galactic latitude Line integrals of NE and (nE)-squared at high Galactic latitude

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...372l..17r&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 372, May 1, 1991, p. L17-L20.

Astronomy and Astrophysics

Astrophysics

119

Electron Density (Concentration), Galaxies, Globular Clusters, Interstellar Gas, Line Of Sight, Pulsars, Emission Spectra, H Alpha Line, H I Regions, H Ii Regions, Hydrogen Ions, Line Spectra

Scientific paper

Recent discoveries of pulsars in high-absolute-z globular clusters have made it possible for the first time to compare unambiguously the value of integral of ne ds with the value of integral of (ne)-squared ds along four 'random' lines of sight at high absolute value of b. The results imply that the diffuse interstellar H(+) is clumped into regions which have an average electron density 0.08/cu cm and which occupy a fraction f equal to or greater than 0.2 of the volume within a 2 kpc thick H(+) layer. The similarity of the results for each of the widely separated directions suggests that there is little variation in the properties of the gas within the solar neighborhood. There is some evidence that the filling fraction increases with distance away from the Galactic midplane.

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